A processing device for generator end cover and use method

Abstract

The present invention relates to the field of end cover processing technology, and discloses a processing device and a method for using a generator end cover, comprising a plurality of generator end covers, wherein the plurality of generator end covers are stacked, a plurality of fan-shaped plates are provided between two adjacent generator end covers, and the fan-shaped rings are provided on the outer wall of the generator end cover for punching toward the fan-shaped plates, and the positions of the fan-shaped plates and the fan-shaped rings correspond one to one. In the present invention, the fan-shaped plates can carry the fan-shaped waste material for punching the generator end cover into the fan-shaped rings, providing storage space for the fan-shaped plates and the fan-shaped waste material, while not affecting the punching of the subsequent generator end cover, ensuring the continuous penetrating punching of the multiple coaxially arranged generator end covers by the fan-shaped rings, and at the same time, the arrangement of the fan-shaped plates can provide support for the punching of the fan-shaped rings, thereby avoiding the collapse of the side of the generator end cover to which the fan-shaped rings are closely attached during the punching process.

Description

Technical Field

[0001] The present invention relates to the technical field of end cover processing, and in particular to a processing device for a generator end cover and a use method thereof. Background Art

[0002] As one of the main components of the generator, the generator end cover itself has some punching holes. These punching holes have multiple functions, such as heat dissipation. The punching holes need to be formed by subsequent punching operations. Therefore, there are corresponding stamping equipment for how to stamp the generator end cover. However, the existing stamping equipment usually has the following problems:

[0003] First, the existing stamping device can only process and stamp one of the generator end covers. After stamping, the corresponding generator end cover needs to be removed and replaced with a new generator end cover for stamping again, which will reduce the efficiency of stamping manufacturing.

[0004] Secondly, most of the existing stamping processes are to apply pressure and stamp from one side of the generator end cover, and then collect and remove the waste left by the stamping, and then proceed to the next round of stamping manufacturing. However, if multiple generator end covers are stacked and processed at the same time, it will cause uneven stamping force, that is, the other side of the generator end cover is in a suspended and unsupported state, which will cause stamping deformation problems. Then the waste left by the stamping needs to be removed in time, otherwise it will affect the subsequent continuous stamping process.

[0005] To this end, we have designed a processing device and a method for using the generator end cover. Summary of the Invention

[0006] The purpose of the present invention is to solve the problem of uneven stamping force caused by simultaneous processing of multiple stacked generator end covers, and to propose a processing device and use method for generator end covers.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A processing device for a generator end cover comprises a plurality of generator end covers, the plurality of generator end covers being stacked, a plurality of fan-shaped plates being arranged between two adjacent generator end covers and abutting against the inner wall of the middle end cover of the generator end cover, a plurality of fan-shaped ring cutters being provided on the outer wall of the end cover of the generator end cover and punched toward the fan-shaped plates, and the positions of the fan-shaped plates and the fan-shaped ring cutters corresponding to each other one by one;

[0009] An auxiliary propulsion mechanism is also provided between two adjacent generator end covers to propel the sector plate to move and separate from the sector plate.

[0010] Preferably, a tool holder is provided on one side of multiple stacked generator end covers, and multiple fan-shaped ring cutters are arranged equidistantly around the circumference and installed on the same tool holder. The tool holder includes a coaxially arranged outer ring frame and an inner ring frame, which are connected by a connecting frame, and the fan-shaped ring cutters slide between the outer ring frame and the inner ring frame through arc grooves.

[0011] Preferably, the auxiliary propulsion mechanism includes:

[0012] The end clamping ring is provided with a plurality of sliding racks corresponding to the sector plates one by one, and the sector plates are connected to the sliding racks through pushing rods;

[0013] The sliding frame slides on the end clamping ring through the second annular groove and the arc-shaped slider;

[0014] One side of the end clamping ring is in contact with the generator end cover, and the second annular groove is arranged on the other side of the end clamping ring.

[0015] Preferably, an auxiliary slide is provided between two adjacent generator end covers for assisting the radial sliding of the slide, and the generator end covers, the auxiliary propulsion mechanism and the auxiliary slide are coaxially arranged in sequence.

[0016] Preferably, the auxiliary slide includes a ball rolling rack, which has a first annular groove on one side of the ball rolling rack facing the slide, and a plurality of balls are arranged in the first annular groove to abut against the slide, and the balls roll in the ball rolling rack through the first annular groove.

[0017] Preferably, the auxiliary propulsion mechanism further comprises:

[0018] An electric push rod has a rectangular groove on the sliding frame, and the pushing rod is installed on the sliding frame through a rectangular block and the rectangular groove. The rectangular block and the rectangular groove are attracted to each other through a magnetic sheet. The electric push rod is installed on the sliding frame, and the output end of the electric push rod extends into the rectangular groove and abuts against the rectangular block.

[0019] Preferably, the sliding frame is further provided with a sliding groove, in which a driving motor is fixedly provided, the arc-shaped slider slides in the sliding groove through a sliding piece, and the output end of the driving motor is fixedly connected to a screw rod adapted to the sliding piece.

[0020] Preferably, the sector-shaped ring knife is adapted to the sector-shaped plate.

[0021] Preferably, the generator end cover, auxiliary propulsion mechanism and auxiliary slide are configured as positioning components, multiple positioning components are connected end to end, and multiple positioning components are clamped by multiple clamping frames, and multiple clamping frames are arranged equidistantly around the circumference, and the clamping frame is an L-shaped frame, and a sliding clamping plate is provided on the clamping frame, and the sliding clamping plate is slidably clamped on the clamping frame through a clamping slot block, and a threaded rod adapted to the clamping block is provided in the clamping slot.

[0022] A method for using a processing device for a generator end cover, the specific operating steps are as follows:

[0023] S1: First, multiple generator end covers are stacked and arranged, and the end clamping ring and the rolling ball frame are coaxially arranged between two adjacent generator end covers in sequence. Since the generator end cover, the auxiliary propulsion mechanism and the auxiliary slide are arranged as a positioning assembly, then multiple positioning assemblies are coaxially arranged to form a component to be processed, and an L-shaped clamping frame is clamped on one side of the component to be processed. Then, the threaded rod is driven to rotate under the action of an external drive, so that the other side of the component to be processed can be clamped by sliding the clamping plate, thereby completing the stacking and clamping of multiple generator end covers;

[0024] S2: Then the output end of the external propulsion device is connected to the knife holder, wherein the knife holder is provided with a plurality of sector-shaped ring knives that abut against the outer wall of the end cover of the generator end cover. At the same time, the sliding frame on the end clamping ring slides on the end clamping ring through the second annular groove and the arc-shaped slider. The sliding frame and the sector-shaped ring knives correspond one to one, and then are fastened to the end clamping ring by bolts to complete the positioning. In this way, the sector plate on the sliding frame abuts against the inner wall of the end cover in the generator end cover, which makes the sector plate and the sector-shaped ring knives respectively located on both sides of the inner wall of one side of the generator;

[0025] S3: Under the action of the external propulsion equipment, the fan-shaped ring knife on the knife holder presses against the outer wall of the end cover of the generator end cover, and then the electric push rod is turned on to push the rectangular block, and the fan-shaped plate on the pushing rod moves toward the fan-shaped ring knife, forming a simultaneous stamping state for both sides of the end cover of the generator end cover. Since the fan-shaped ring knife is adapted to the fan-shaped plate, the stamping waste will enter the fan-shaped ring knife together with the fan-shaped plate and the pushing rod. At this time, the pushing rod is separated from the sliding frame, and then the drive motor is turned on to allow the screw rod to slide with the sliding frame on the arc-shaped slider, that is, to allow the sliding frame to slide outward along the radial direction of the end retaining ring, making room for subsequent fan-shaped ring knife stamping, facilitating continuous stamping.

[0026] The beneficial effects of the present invention are:

[0027] The fan-shaped plate of the present invention can carry the fan-shaped waste on one side of the stamped generator into the fan-shaped ring knife, providing storage space for the fan-shaped plate and the fan-shaped waste, and at the same time will not affect the stamping of the generator end cover behind, ensuring the continuous penetration stamping of multiple coaxially arranged generator end covers by the fan-shaped ring knife. At the same time, the setting of the fan-shaped plate can provide support for the stamping of the fan-shaped ring knife, avoiding the collapse of the side of the generator end cover to which the fan-shaped ring knife is closely attached during the stamping process.

[0028] Since the fan-shaped ring knife is adapted to the fan-shaped plate, the stamping waste will enter the fan-shaped ring knife together with the fan-shaped plate and the pushing rod. At this time, the pushing rod will be separated from the sliding frame, and then the driving motor will be turned on to allow the screw rod to slide with the sliding frame on the arc-shaped slider, that is, the sliding frame will slide outward along the radial direction of the end retaining ring, making room for subsequent fan-shaped ring knife stamping, thereby facilitating continuous stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of a processing device for a generator end cover proposed by the present invention;

[0030] Figure 2 The left and right isometric views of a processing device for a generator end cover proposed by the present invention;

[0031] Figure 3 This is a schematic structural diagram of a tool holder in a processing device for a generator end cover proposed by the present invention;

[0032] Figure 4 This is a structural schematic diagram of a ball rolling rack in a processing device for a generator end cover proposed by the present invention;

[0033] Figure 5 for Figure 4 A schematic diagram of the structure at center A;

[0034] Figure 6 This is a schematic structural diagram of a single set of generator end covers in a processing device for generator end covers proposed by the present invention;

[0035] Figure 7 The left and right isometric views of a single set of generator end covers in a processing device for generator end covers proposed by the present invention;

[0036] Figure 8 This is a structural schematic diagram of a reverse thrust mechanism in a processing device for a generator end cover proposed by the present invention;

[0037] Figure 9 for Figure 8 A magnified schematic diagram of the structure at B in the middle;

[0038] Figure 10 The left and right isometric views of a reverse thrust mechanism in a processing device for a generator end cover proposed by the present invention;

[0039] Figure 11 This is a partial exploded view of a reverse thrust mechanism in a processing device for a generator end cover proposed by the present invention;

[0040] Figure 12 This is a schematic diagram of the state of stamping processing in a processing device for a generator end cover proposed by the present invention;

[0041] Figure 13 This is a schematic diagram of the state of a sector-shaped ring cutter and a sector-shaped plate in a processing device for a generator end cover proposed by the present invention;

[0042] Figure 14This is a front view of the punching of a sector ring cutter and a sector plate in a processing device for a generator end cover proposed by the present invention;

[0043] Figure 15 for Figure 14 Schematic diagram of the enlarged structure at point C in the middle.

[0044] In the figure: 1. Generator end cover; 2. End clamping ring; 3. Clamping frame; 4. Sliding clamping plate; 5. Threaded rod;

[0045] 6. Tool holder; 61. Outer ring frame; 62. Inner ring frame; 63. Connecting frame;

[0046] 7. Sector-shaped ring cutter; 8. Ball rack; 9. First annular groove; 10. Ball; 11. Second annular groove; 12. Arc-shaped slider; 13. Sliding rack; 14. Push rod; 15. Sector plate; 16. Rectangular block; 17. Electric push rod; 18. Sliding groove; 19. Screw; 20. Drive motor; 21. Rectangular groove. DETAILED DESCRIPTION Example

[0047] Reference Figures 1-15 A processing device for a generator end cover comprises a plurality of generator end covers 1, which are stacked and coaxially clamped. A plurality of fan-shaped plates 15 are arranged between two adjacent generator end covers 1 and are against the inner wall of the end cover in the generator end cover 1. The plurality of fan-shaped plates 15 are distributed in an equidistant circle. The outer wall of the end cover of the generator end cover 1 is provided with a plurality of fan-shaped ring knives 7 punched toward the fan-shaped plates 15. The positions of the fan-shaped plates 15 and the fan-shaped ring knives 7 correspond one to one. Such an arrangement facilitates the mutual punching of the fan-shaped plates 15 and the fan-shaped ring knives 7 under the action of the external stamping equipment to complete the punching of the end cover of the generator end cover 1 to form a through hole.

[0048] Reference Figure 13-15 State, in which the fan-shaped ring knife 7 is adapted to the fan-shaped plate 15. It should be noted that the outer wall of the fan-shaped plate 15 is adapted to the inner wall of the fan-shaped ring knife 7. Therefore, it can be ensured that under the stamping action of the fan-shaped ring knife 7, the fan-shaped plate 15 can bring the fan-shaped waste of the stamped generator end cover 1 into the fan-shaped ring knife 7, providing storage space for the fan-shaped plate 15 and the fan-shaped waste, and at the same time will not affect the stamping of the subsequent generator end cover 1, ensuring the continuous penetration stamping of the fan-shaped ring knife 7 on multiple coaxially arranged generator end covers 1. At the same time, the setting of the fan plate 15 can provide support for the stamping of the fan-shaped ring knife 7, avoiding the collapse of the generator end cover 1 to which the fan-shaped ring knife 7 is closely attached during the stamping process.

[0049] An auxiliary propulsion mechanism is also provided between two adjacent generator end covers 1 to propel the fan plate 15 to move and detach from the fan plate 15, wherein the auxiliary propulsion mechanism is used to propel the fan plate 15, and the external stamping equipment that drives the fan plate 15 and the fan ring knife 7 to extrude the end cover of the generator end cover 1 adopts a pneumatic cylinder.

[0050] The working principle of the present invention is as follows:

[0051] First, multiple generator end covers 1 are stacked and arranged, and then the multiple generator end covers 1 are coaxially clamped, and the fan-shaped ring knife 7 and the fan-shaped plate 15 on both sides of the generator end cover 1 are driven to approach each other for stamping by an external stamping device. The arrangement of the fan-shaped plate 15 can provide support for the stamping of the fan-shaped ring knife 7, thereby preventing the generator end cover 1, to which the fan-shaped ring knife 7 is closely attached, from collapsing during the stamping process;

[0052] At the same time, the outer wall of the fan-shaped plate 15 is adapted to the inner wall of the fan-shaped ring knife 7, so that under the stamping action of the fan-shaped ring knife 7, the fan-shaped plate 15 can bring the fan-shaped waste on one side of the stamped generator end cover 1 into the fan-shaped ring knife 7, providing storage space for the fan-shaped plate 15 and the fan-shaped waste, and at the same time will not affect the stamping of the subsequent generator end cover 1, ensuring the continuous penetration stamping of the fan-shaped ring knife 7 on multiple coaxially arranged generator end covers 1. Example

[0053] The generator end cover 1, the auxiliary propulsion mechanism and the auxiliary slide are set as positioning components, and multiple positioning components are connected end to end, and multiple positioning components are clamped by multiple clamping frames 3, and multiple clamping frames 3 are arranged equidistantly around the circumference, and the clamping frame 3 is an L-shaped frame, and a sliding clamping plate 4 is provided on the clamping frame 3, and the sliding clamping plate 4 is slidably clamped on the clamping frame 3 through a clamping slot block, and a threaded rod 5 adapted to the clamping block is provided in the clamping slot, and the end clamping ring 2 and the rolling ball frame 8 are coaxially arranged between two adjacent generator end covers 1 in sequence. Since the generator end cover 1, the auxiliary propulsion mechanism and the auxiliary slide are set as a positioning component, then multiple positioning components are coaxially arranged to form a component to be processed, which is clamped on one side of the component to be processed by the L-shaped clamping frame 3, and then the threaded rod 5 is driven to rotate under the action of the external drive, so that the sliding clamping plate 4 can clamp one side of the component to be processed and the other side, thereby completing the stacking and clamping of multiple generator end covers 1.

[0054] Reference Figure 3 、 Figure 12 and Figure 13 In the state, a plurality of generator end covers 1 arranged in a stacked manner are provided with a tool holder 6 on one side, and a plurality of fan-shaped ring knives 7 are arranged equidistantly around the circumference and installed on the same tool holder 6. The corresponding number of fan-shaped ring knives 7 are selected according to needs and placed on the tool holder 6.

[0055] The tool holder 6 includes a coaxially arranged outer ring frame 61 and an inner ring frame 62, which are connected by a connecting frame 63. The fan-shaped ring knife 7 slides between the outer ring frame 61 and the inner ring frame 62 through the arc groove, and is then fixed to the tool holder 6 by bolts. Then, the multiple fan-shaped ring knives 7 on the tool holder 6 are driven by an external stamping equipment to stamp the generator end cover 1 to achieve stamping. Example

[0056] The following structure can be selected for auxiliary stamping of the inner wall of the generator end cover 1. For example, the auxiliary propulsion mechanism includes an end clamping ring 2, and a plurality of sliding frames 13 corresponding to the fan-shaped plates 15 are provided on the end clamping ring 2. The fan-shaped plates 15 are connected to the sliding frames 13 through pushing rods 14, wherein the fan-shaped plates 15 are connected to the end clamping ring 2 and are tightly attached to the inner wall of the generator end cover 1.

[0057] The sliding frame 13 slides on the end retaining ring 2 through the second annular groove 11 and the arc-shaped slider 12, so the sliding position of the sliding frame 13 on the end retaining ring 2 corresponds to the position of the fan-shaped ring knife 7, and then is fixed to the end retaining ring 2 by bolts.

[0058] One side of the end clamp ring 2 is in contact with the generator end cover 1, and the second annular groove 11 is provided on the other side of the end clamp ring 2. An auxiliary slide 13 is provided between two adjacent generator end covers 1 to assist the radial sliding of the slide frame 13. The generator end cover 1, the auxiliary propulsion mechanism and the auxiliary slide are coaxially arranged in sequence, thus forming Figure 7 Status shown.

[0059] The output end of the peripheral propulsion equipment is connected to the tool holder 6, wherein the tool holder 6 is provided with a plurality of fan-shaped ring knives 7 that are abutted against the outer wall of the end cover of the generator end cover 1. At the same time, the sliding frame 13 on the end retaining ring 2 slides on the end retaining ring 2 through the second annular groove 11 and the arc-shaped slider 12. The sliding frame 13 corresponds to the fan-shaped ring knife 7 one by one, and then is fastened to the end retaining ring 2 by bolts to complete the positioning, so that the fan-shaped plate 15 on the sliding frame 13 is abutted against the inner wall of the end cover in the generator end cover 1, which will cause the fan-shaped plate 15 and the fan-shaped ring knife 7 to be respectively located on both sides of the inner wall of the end cover of the generator end cover 1.

[0060] The auxiliary slide includes a ball rack 8, which has a first annular groove 9 on the side of the slide 13, and a plurality of balls 10 are arranged in the first annular groove 9 to abut against the slide 13. The balls 10 roll in the ball rack 8 through the first annular groove 9, thereby providing rolling support for the sliding of the slide 13.

[0061] The auxiliary propulsion mechanism also includes an electric push rod 17. A rectangular groove 21 is provided on the sliding frame 13, and the pushing rod 14 is installed on the sliding frame 13 through the rectangular block 16 and the rectangular groove 21. The rectangular block 16 and the rectangular groove 21 are attracted to each other through the magnetic sheet. The electric push rod 17 is installed on the sliding frame 13, and the output end of the electric push rod 17 extends into the rectangular groove 21 and is against the rectangular block 16. Therefore, during the stamping process of the fan ring knife 7, the electric push rod 17 is turned on at the same time to allow the fan plate 15 and the fan ring knife 7 to move relative to each other. The setting of the fan plate 15 can provide support for the stamping of the fan ring knife 7, thereby avoiding the collapse of the generator end cover 1 to which the fan ring knife 7 is closely attached during the stamping process.

[0062] Turn on the electric push rod 17 to push the rectangular block 16, and move the fan-shaped plate 15 on the pushing rod 14 toward the fan-shaped ring knife 7, forming a simultaneous stamping state for both sides of the end cover of the generator end cover 1. Then, as the electric push rod 17 is turned on, the rectangular block 16 will be pushed away from the rectangular groove 21, providing conditions for the sliding frame 13 to detach from the fan-shaped plate 15.

[0063] Since the sector ring knife 7 is adapted to the sector plate 15 , the punching waste will enter the sector ring knife 7 along with the sector plate 15 and the pushing rod 14 .

[0064] A sliding groove 18 is also provided on the sliding frame 13, and a driving motor 20 is fixed in the sliding groove 18. The arc-shaped slider 12 slides in the sliding groove 18 through a slider, and the output end of the driving motor 20 is fixedly connected to a screw rod 19 adapted to the slider. At this time, the pushing rod 14 is disengaged from the sliding frame 13, and then the driving motor 20 is turned on to allow the screw rod 19 to slide with the sliding frame 13 on the arc-shaped slider 12, that is, the sliding frame 13 slides outward along the radial direction of the end retaining ring 2, leaving stamping space for the subsequent stamping of the fan-shaped ring knife 7, which is convenient for continuous stamping.

[0065] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A processing device for generator end covers, comprising a plurality of generator end covers, characterized in that: Multiple generator end covers are stacked, and multiple fan-shaped plates are arranged between two adjacent generator end covers to abut against the inner wall of the middle end cover of the generator end cover. The outer wall of the generator end cover is provided with multiple fan-shaped ring knives punched toward the fan-shaped plates, and the positions of the fan-shaped plates and the fan-shaped ring knives correspond one to one; An auxiliary propulsion mechanism is also provided between two adjacent generator end covers to propel the fan-shaped plate to move and detach from the fan-shaped plate. A tool holder is provided on one side of the stacked multiple generator end covers. Multiple fan-shaped ring knives are arranged equidistantly around the circumference and installed on the same tool holder. The tool holder includes a coaxial outer ring frame and an inner ring frame. The outer ring frame and the inner ring frame are connected by a connecting frame. The fan-shaped ring knife slides between the outer ring frame and the inner ring frame through the arc groove. The auxiliary propulsion mechanism includes: The end clamping ring is provided with a plurality of sliding racks corresponding to the sector plates one by one, and the sector plates are connected to the sliding racks through pushing rods; The sliding frame slides on the end clamping ring through the second annular groove and the arc-shaped slider; One side of the end snap ring is in contact with the generator end cover, and a second annular groove is provided on the other side of the end snap ring. An auxiliary slide is provided between two adjacent generator end covers to assist the radial sliding of the slide frame. The generator end cover, the auxiliary propulsion mechanism and the auxiliary slide are coaxially arranged in sequence. The auxiliary slide includes a ball rolling frame. The ball rolling frame has a first annular groove formed on one side of the slide frame, and a plurality of balls are provided in the first annular groove to abut against the slide frame. The balls roll in the ball rolling frame through the first annular groove. The auxiliary propulsion mechanism also includes: An electric push rod has a rectangular groove on the sliding frame, and the pushing rod is installed on the sliding frame through a rectangular block and the rectangular groove. The rectangular block and the rectangular groove are attracted to each other through a magnetic sheet. The electric push rod is installed on the sliding frame, and the output end of the electric push rod extends into the rectangular groove and abuts against the rectangular block. A sliding groove is also provided on the sliding frame, and a drive motor is fixed in the sliding groove. The arc-shaped slider slides in the sliding groove through a slide, and the output end of the drive motor is fixedly connected to a screw rod adapted to the slide.

2. A processing device for a generator end cover according to claim 1, characterized in that: The fan-shaped ring knife is adapted to the fan-shaped plate.

3. A processing device for a generator end cover according to claim 2, characterized in that: The generator end cover, auxiliary propulsion mechanism and auxiliary slide are arranged as positioning components, multiple positioning components are connected end to end, and multiple positioning components are clamped by multiple clamping frames, and multiple clamping frames are arranged equidistantly around the circumference. The clamping frame is an L-shaped frame, and a sliding clamping plate is provided on the clamping frame, and the sliding clamping plate is slidably clamped on the clamping frame through a clamping slot block, and a threaded rod adapted to the clamping block is provided in the clamping slot.

4. A method for using a processing device for a generator end cover, applied to the processing device for a generator end cover in claim 3, characterized in that: The specific steps are as follows: S1: First, multiple generator end covers are stacked and arranged, and the end clamping ring and the rolling ball frame are coaxially arranged between two adjacent generator end covers in sequence. Since the generator end cover, the auxiliary propulsion mechanism and the auxiliary slide are arranged as a positioning assembly, then multiple positioning assemblies are coaxially arranged to form a component to be processed, and an L-shaped clamping frame is clamped on one side of the component to be processed. Then, the threaded rod is driven to rotate under the action of an external drive, so that the other side of the component to be processed can be clamped by sliding the clamping plate, thereby completing the stacking and clamping of multiple generator end covers; S2: Then the output end of the external propulsion device is connected to the knife holder, wherein the knife holder is provided with a plurality of sector-shaped ring knives that abut against the outer wall of the end cover of the generator end cover. At the same time, the sliding frame on the end clamping ring slides on the end clamping ring through the second annular groove and the arc-shaped slider. The sliding frame and the sector-shaped ring knives correspond one to one, and then are fastened to the end clamping ring by bolts to complete the positioning. In this way, the sector plate on the sliding frame abuts against the inner wall of the end cover of the generator end cover, which makes the sector plate and the sector-shaped ring knives respectively located on both sides of the inner wall of the end cover of the generator end cover; S3: Under the action of the external propulsion equipment, the fan-shaped ring knife on the knife holder presses against the outer wall of the end cover of the generator end cover, and then the electric push rod is turned on to push the rectangular block, and the fan-shaped plate on the pushing rod moves toward the fan-shaped ring knife, forming a simultaneous stamping state for both sides of the end cover of the generator end cover. Since the fan-shaped ring knife is adapted to the fan-shaped plate, the stamping waste will enter the fan-shaped ring knife together with the fan-shaped plate and the pushing rod. At this time, the pushing rod is separated from the sliding frame, and then the drive motor is turned on to allow the screw rod to slide with the sliding frame on the arc-shaped slider, that is, to allow the sliding frame to slide outward along the radial direction of the end retaining ring, making room for subsequent fan-shaped ring knife stamping, facilitating continuous stamping.

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